A poorly written OS for the x86 arch. (WIP)
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isr_debug_ptr equ 0xe222
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isr_eip_ptr equ 0xe223
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%macro isr_err_stub 1
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isr_stub_%+%1:
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; Save exception vec
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mov [isr_debug_ptr], byte %1
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; Save the instruction pointer
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mov [isr_eip_ptr], dword eax
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; Handle the exception
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call exception_handler
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iret
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%endmacro
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%macro isr_no_err_stub 1
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isr_stub_%+%1:
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mov [isr_debug_ptr], byte %1
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call exception_handler
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iret
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%endmacro
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extern exception_handler
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isr_no_err_stub 0
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; TODO: make keeb drivers
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isr_err_stub 1 ; keyboard : noerr
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isr_no_err_stub 2
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isr_no_err_stub 3
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isr_no_err_stub 4
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isr_no_err_stub 5
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isr_no_err_stub 6
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isr_no_err_stub 7
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isr_err_stub 8 ; err
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isr_no_err_stub 9
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isr_err_stub 10
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isr_err_stub 11
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isr_err_stub 12
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isr_err_stub 13
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isr_err_stub 14
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isr_no_err_stub 15
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isr_no_err_stub 16
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isr_err_stub 17
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isr_no_err_stub 18
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isr_no_err_stub 19
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isr_no_err_stub 20
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isr_no_err_stub 21
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isr_no_err_stub 22
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isr_no_err_stub 23
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isr_no_err_stub 24
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isr_no_err_stub 25
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isr_no_err_stub 26
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isr_no_err_stub 27
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isr_no_err_stub 28
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isr_no_err_stub 29
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isr_err_stub 30
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isr_no_err_stub 31
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global isr_stub_table
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isr_stub_table:
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%assign i 0
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%rep 32
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dd isr_stub_%+i
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%assign i i+1
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%endrep
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